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will DDR2800 work in my 667 mobo?

Originally posted by: sabooya
I have a GA-945P-S3 Rev2 Motherboard. It supports up to DDRII 667. If I bought DDRII 800 ram would it work, and would I notice a difference?
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Buy DDR2-800 because it will work @ DDR2-667 in this motherboard, you might want to use it some day in another motherboard that can support DDR2-800, and because its not much more than DDR2-667, not because there will be any other difference.

And good grief, no, don't buy Corsair Dominators for $60 after rebate. Something like this should be fine:

http://www.newegg.com/Product/...x?Item=N82E16820227139

http://www.newegg.com/Product/...x?Item=N82E16820145034
 
Dominators are not going to be faster than any other RAM in practice for what the OP is doing, especially considering that his motherboard apparently only recognizes up to DDR2-667.
 
Originally posted by: tcsenter
Originally posted by: 18 Is Number 1
That's right...you don't want anything faster.
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You're new to all this, aren't you? Did you happen to see the motherboard and chipset in question here?
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Did you happen to see Cas3 ?
If you frequented other boards, you wouldn't make that assumption.
 
Originally posted by: 18 Is Number 1
Originally posted by: tcsenter
Originally posted by: 18 Is Number 1
That's right...you don't want anything faster.
Click to expand...
You're new to all this, aren't you? Did you happen to see the motherboard and chipset in question here?
Click to expand...

Did you happen to see Cas3 ?
If you frequented other boards, you wouldn't make that assumption.
Click to expand...

If you're not running benchmarks, CAS3 makes no difference. And I wouldn't buy RAM that says it needs 2.4V.
 
Originally posted by: 18 Is Number 1
Did you happen to see Cas3 ?
Click to expand...
I've seen the same from you on other boards. Its very nice for those modules to be CL3, and completely irrelevant. Cheap CL4 DDR2-800 modules are always CL3 @ DDR2-667.
 
I maintain that this set is some kick-butt RAM (D9GMH) and will speed up the OPs system as well as give him something to take into his next set up. There will be a difference benchmarking, it's up to the OP as to whether or not it's worth spending the bucks to do it.
P.S. 2.4v won't be needed for 3-3-3-8 timings.
P.S.S. If it's so easy to hit 667 at Cas 3...how come there are almost NO sets rated at that?
 
Originally posted by: 18 Is Number 1
P.S.S. If it's so easy to hit 667 at Cas 3...how come there are almost NO sets rated at that?
Click to expand...
There were a number available two years ago, when DDR2-667 was an enthusiast speed bin. A-DATA, G.SKILL, KingMAX, OCZ, Mushkin, Team Xtreem and others offered PC2-5300/5400 CL3 modules at one time. Crucial even chose PC2-5300 CL3 kit to commemorate its 10th anniversary.

It isn't considered to have much enthusiast appeal (i.e. market demand) for at least one year now. If you were around then, you may remember how few motherboards and chipsets of this era could reliably run CL3 at this frequency (e.g. like Intel 945). However, most DDR2-800 CL4 modules today will do CL3 @ DDR2-667 without problem, unless the module already requires excessive overvolting to support CL4 @ DDR2-800 (e.g. 2.2V or more).

The Intel 945 chipset does not have the memory strap/ratios to support DDR2-800. To go beyond DDR2-667, the FSB must be manually overclocked. It is questionable whether any motherboard using Intel 945 is going to allow CL3 for any DRAM frequency over DDR2-533, unless its an enthusiast-oriented motherboard. The GA-945P-S3 is a mainstream performance motherboard, and being positioned under $100, was value-oriented at that.
 
Originally posted by: tcsenter
Originally posted by: 18 Is Number 1
P.S.S. If it's so easy to hit 667 at Cas 3...how come there are almost NO sets rated at that?
Click to expand...
most DDR2-800 CL4 modules today will do CL3 @ DDR2-667 without problem, unless the module already requires excessive overvolting to support CL4 @ DDR2-800 (e.g. 2.2V or more).
Click to expand...

I've never tried that, although it's native to my Team Xtreem. I'll give that a go with some of my 2x1GB 6400 laying around.
 
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